An out-swinger is quite similar to an in-swinger. The only difference is that an out-swinger is going away from the batsman instead of to the batsman.
Again this is for right hander, if you are left handed, it is the opposite way.
You need one shiny part of your ball and one filthy part of your ball. Now put your index finger on the stitching and your middle finger directly next to it on the filthy part. Your thumb should be on the other site of the ball on the stitching as well. The shiny part should be on your left site and the filthy part on your right.
Now it is a normal bowling delivery and you have bowled an out-swinger.